U18 Marconi Osram BBC seal ST fat shape large square anode Holy Grail U18/20 FW4/800

Description

One of the most fascinating audio rectifier introduced before the U18/20 is the U18 with a patented design by the Marconi Osram Valve.

It is a robust, chubby rectifier that has no peers.

Full getter and ST fat shape with large square ribbed abone, among the best ever made rectifiers.

We offer a 100% tested pair U18 BBC seal 1940s the one and only!